On March 4, 2023, the Office of Defects Investigation (ODI) opened PE23003 to investigate two reports of steering loss on model year (MY) 2023 Tesla Model Y vehicles due to the detachment of the steering wheel from the steering column while the vehicle was in motion. ODI confirmed from Tesla that in both cases, the vehicles were delivered to the owners missing the retaining bolt (P/N 1036655-00-A) used to secure the steering wheel to a splined shaft on the steering column. Tesla repaired both vehicles under warranty. ODI further learned that both 2023 MY Model Y vehicles had been manufactured in the first week of January 2023 at Tesla’s Austin, TX and Fremont, CA manufacturing facilities, respectively. Both vehicles had received end of production line repairs (rectification) requiring removal and reinstallation of the steering wheel before release from the factory. End of line rectification is an offline process manufacturers use to repair any defects found prior to vehicle release from the factory. It often requires removing and reinstalling unrelated components to access and correct the issue detected during inspections. This service process usually takes place outside the assembly line’s standard quality-control safeguards, introducing the risk of an incomplete or incorrect repair. On April 28, 2023, ODI sent an Information Request letter to Tesla requesting production data and steering wheel detachment reports for all MY 2022 – 2023 Tesla models; numbers of vehicles undergoing end of line steering wheel removals / reinstallations; information about Tesla’s procedures and process controls pertaining to this activity; and Tesla’s assessment of the alleged defect. ODI sent three sets of follow-up questions to Tesla in April, May, and June of 2025 to request a field data update, fleet mileage data, and further information concerning Tesla’s rectification processes and its 2023 internal assessments. ODI’s analysis of Tesla’s submissions and other relevant data reveal